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ILSpy is the open-source .NET assembly browser and decompiler.

Development started after Red Gate announced that the free version of .NET Reflector would cease to exist by end of February 2011.

ILSpy Features

• Assembly browsing
• IL Disassembly
• Decompilation to C#
• Saving of resources
• Search for types/methods/properties (substring)
• Hyperlink-based type/method/property navigation
• Base/Derived types navigation
• Navigation history
• BAML to XAML decompiler
• Save Assembly as C# Project

ILSpy Roadmap

• Improve the decompiler
  • Improve control flow structure detection to eliminate gotos
  • Add support for enumerators (yield return)
  • Add support for object/collection initializers
  • Add support for ?? and ?: operators
• Assembly Lists
• Find References
• Improve search performance
• Debugger
• Bookmarks
• Extensibility via addins
• Find usage (of type/method/property)

Latest Binaries for ILSpy

Build Server: http://build.sharpdevelop.net/BuildArtefacts/#ILSpy

Release History

Want to know when major new features are added? When a new stable version is released?

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• 2/24/2011 M1 (Milestone 1) Release announcement
• 2/16/2011 First Preview announcement
• 2/4/2011 Development Starts (github repository created)

Discussion Forum

http://community.sharpdevelop.net/forums/69.aspx

Please use the forum to discuss issues, feature ideas, et cetera. For bug reporting, either use the forum or if you have a GitHub account, add them directly to https://github.com/icsharpcode/ILSpy/issues

Blog Posts on ILSpy Development

• Daniel Grunwald's blog
• David Srbecky's blog

ILSpy Source Code

See https://github.com/icsharpcode/ILSpy

Screencasts, Demo & How To Videos

• Overview of features in ILSpy Build 296 Resolution: 720p

Screenshots

Viewing IL (Build 199)

Navigating Types (Build 199)

Saving Resources (Build 199)

Decompiling a Type to C# (Build 199)